Chris is right I found a really good example on one of the frog forums (other site) of the ruined Inca temple look. It was fairly simple and basically consisted of Acrylic sheets cut and glued in place like stone than covered in a concrete like mix. Most likely a fortified acrylic polymer blend with some sort of tile grout base.
Anyways I have the pics on my home PC I can email to you if you would like. I don't believe I have the origional link anylonger and it wasn't very informitive but the pics are pretty awesome.
I myself am using the theme in my new Boa cages but will be using extruded polysterene and some sort of mix. Havn't got it narrowed down to the type yet. Most likely for ease I will stick to tilegrout and acrylic paints. Than clear coat the entire project when complete.
Just keep in mind the ease of cleaning and the proper display of the animal (and finding).
Good Luck
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Jeremy
"I am become death, the destroyer of worlds" July 16, 1945 Robert Oppenheimer
0.1 Sunglow "Khal" RTB
0.1 Snow "Khal" RTB
1.0 Double Het "Khal" Sunglow RTB
1.1 Double Het "Sharp" Snow RTB's
1.1 Hypomelenistic RTB's
0.0.13 Hypomelenistic RTB's
0.2 Pastel Hypo RTB's
1.0 Double Het Stripe Albino RTB's
0.1 Suriname RTB
0.0.7 Normal Suriname Hybrid's
0.1 Anerthrystic RTB
3.6.14 Red Bearded Dragons
1.1 Rhinoceros Iguana's
1.0 Green Iguana
1.0 Ball Python
1.1 Cream Golden Retrieviers
1.0 Pomeriaian
0.3 Catus Terribilis
0.1 Spouse
1.0 Child